Journal box guard



Dec. 25, 1951 I c. VINCENT 2,580,370

JOURNAL BOX GUARD Filed March 1, 1948 Patented Dec. 25, 1951 .roU tNAL BOX U R Ga lYince -t, Ghi a o. 11,, c of one-fourth tql thi a hins Chica o,

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' This. invention relates. to improvements in dust guards for use in journal boxes of-railway. v'e hicles,

One. of. the objects. of this. .invention is to provide a dust guard that will effectively keep dirt, dust and cinders out of thejournal box andat th same ime minimize the. loss. of. oil from the. iqut elbcx.

Another object of thi invention is. to. provide. 1 uard. t atis constructed in such a man.- ner that it will efiectivelyheep dirt out andkeell oil in the journalbox for amuch longertiine than O h r dust uards. 19W used. on ai a 325. 0 nd W hqut r plaeine. or renewin any, Par feusrd- A est re f, hi n entiqn s the act that. th l ments whic seal h iourna1.b@.- 1o, not. lik mes d uard engine thea e ho de d. i i e W1 a d. s ill. a lew he. 318 t i f frictional? W thi e dust uard. ut e ta n s i mentseba e Withtll axl While other e i lem n s. emsia tat on rv.

Th guard o hi nv ntion. is qmrqses Qia l eve. t i c r o t e ai s or iour; @1 91".

lar," a ringthat encircles the sleeve and is ad;

ss lvr s t. which ne has we. wardly'extendin i rimjaround the center oi. ts;

' outer, circumference, a. framers it the. slot pro,-

vided in the" journal box. housing, which frame.

hasjajf central opening so as toiencirclethe. axle, sleevev and ringfandiwhich frame has a r ecessed erosiv x n n 'auaro c hi penin a'nd; h e se f h v n -i is. s: siejmbled in the journal box and around 'theaxle, a d u warfil e endine m s s i ab f ttat h in s'aidrecessed groove! 7' A, preferred 'andlpractical embodiment of the invention is illustrated in the accompanying drawing, in which Fig. 1 is a face view of the dust guard for the journal bearing.

Fig. 2 is an enlarged sectional View along line 22 of Fig. 1 of the dustguard-mounted on the axle.

- i 3:1 5 etailed sect ona view or th eus sta e es sinh ed. on. hemca axle. and in position he-musin theiour albox. shown par tial outline.

Fig. 4 is a view of the drive keys as seen when looking down at it along line 4-4 of Fig. 2.

Fig. 5 is a detailed sectional view of the drive key along line 5-5 of Fig. 2.

In the several figures of the drawin similar reference characters designate corresponding parts of the device of the invention.

.1 claim... (01.28696).

A face viewof-the dust guard of this invention is shown in Fig. 1 in which i is a cross sectional view of the axle, 2. is the detachable face plate of the guard fastened in place by a series of set screws represented by 3. A ring 4 is slidably fastened to sleeve 5 which is fastened securely.

to axle l by. set screwsrepresented by t.

Fig. 2 is an enlarged sectional. view. of the dust guard along line 2-2 which shows some of'the details of construction of the. device of this invention. The axle I. is shown inbroken section and the top portion shows thesleeve '5. which is widerthan the ring 4. held. in. place around the,

axle by set. screw 5. -.A cross section of ring it. shows acentral peripheral flange orrim l which extends.radiallyoutwardly as shown around. the. outside circumference of ring. 4. The rim 7. ex-v tends into a groove formed by the retaining.

frame. 8 of the. guard, which was, not visible in Fig. '1, and the face plate .2,.

The, bottom portion of. Figure 2 shows another position of; the axlevshownin out-line,- at it and.

the shoulder of the axlein outline at; l t. The portionof the inside faceof; sleeve ,5j :that is visible showsslot 9 and hole for; setscrew 6 althql hthe set screwis not shown inthissectional View.

In Fig. d there-is illustratedyone of;- the features;

ot n en i n. It. illustratesthe ad. oithe plunger proper itof; a; self contained. spring-..

p es edp unse emb y-H disposedinslat 9:01" sleeve 5,: showing; the flattenedsides of the head ofthe plunger, it for meeting: the, straight sides of theslot in sucha mannerthat the rotary motion of axle. I and sleeve .5: is translated by the plunger. meeting the side wall of" slot" 9 in thesleeve 5 to the ring 4. As shown in the lower portion of Fig. 2 the profile view of the plunger assembly is circular so that ring 4 can be slidably attached to or removed from sleeve 4. The slot 9 permits movement of the axle and sleeve back and forth Within the limits of the slot when for example the car wheel is passing along a curved sleeve 5 to axle 3 rail. A side thrust beyond the limits of the slot would, because of the circular contour of the spring-pressed plunger in the direction parallel to the axle, cause the ring 4 to become disattached from sleeve 5. However, the ring is slidably adjustable on the sleeve so that it could be easily reassembled as part of the rotating unit comprising the car axle, the sleeve and the ring.

Fig. 5 shows another detailed sectional view of the spring-pressed plunger assembly ll. particularly the details of the plunger and spring mechanism which is fitted into ring 4. The several figures of the drawing show three assemblies H located at 120 from each other in ring 4. Likewise the severalfigures of the drawing show three set screws represented as 6 for securing sleeve 5 to axle I. It is not'an object of this invention to restrict the construction of the device of this invention by limiting the disclosure or invention to any specific number of assemblies II to slidably attach ring 4 to sleeve 5, or to any specific number of set screws ,to securely fasten However, a sufiicient number of both the plunger assemblies and set screws must be employed so as to effectively accomplish their purposes and for'reasons of strength, design and effectiveness they should be arranged at equal intervals from their respective. counterparts.

A special feature of the invention is the construction of the elements which keep the oil in the journal box and keep cinders and dirt out of the journal box, namely ring 4 which slidably rotates in frame 8. When face plate 2 is fastened in place by set screws 3 to the frame 8 there is formed a circular groove in which the central rim 1, which extends outwardly around the circumference of ring 4, frictionally rotates. It is also within the scope of this invention to have the rim extend inwardly from the frame of the dust guard and to have the groove formed as a recess in the rotating ring, so that in such construction the ring which rotates with the axle would be riding the rim of the frame like a double flanged wheel runs on a rail.

Dust guards on the market now are made from many different kinds of materials, such as nonferrous metals, wood, leather, plastic materials, plywood, Bakelite, fibrous compositions and others. but none of them have proven completely satisfactory for use in journal box dust guards, either because of cost, wearing value, replacement, breakage or simplicity of construction. The dust guard of the invention could probably be made to work effectively if made properly out of any of the aforesaid materials. However, in a preferred construction the device of this invention would be most practical if made of hard and long-wearing metal, like steel, with friction bearing metals for those parts which are in contact when elements of the device are slidably moving or rotating.

In order to obtain long life at minimum cost it is within the scope of this invention to use alloys and mixtures of metals. For those surfaces which move in contact with each other it is within the scope of this invention to use bronze, brass, or other compositions of friction bearing metals with All of these materials have some value a view to obtain a maximum wearing quality at a low or reasonable cost of production. Of course the design of the device of this invention is purposely such that the entire dust guard may be removed and replaced by another in the journal box, and any of the worn, broken or failing part may be replaced in the removed guard and it may be restored to use in the same or another journal box.

In the drawing and the description of this invention reference has been made to the application of the sleeve to the axle and the ring to the sleeve. It is also within the scope of this invention to attach the ring to theaxle without using a sleeve by cutting slots in the axle for'the drive keys. Likewise the application of either or both the sleeve and ring can be made to a journal collar or shoulder of the axle instead of the axle as is shown in the drawing.

What I claim is: I

A dust guard for a journal box having an axle extending therethrough and provided with an in ternal annular recess for accommodation of the guard, said dust guard comprising a cylindrical sleeve of a width substantially greater than said annular recess, means fixedly securing said sleeve on said axle in a position of approximate radial alignment with said recess, a ring member surrounding said sleeve and axially slidable thereon and fitted closely therearound in substantial seal-'- ing relationship with respect thereto, there being a plurality of axially extending straightsided slots formed in said sleeve member at circumferentially spaced points therearound, there being a plurality of circumferentially spaced radially extending bores formed in said ring member in register with said slots, a self-contained plunger assembly dis posed in each bore and including a spring-pressed plunger proper having an end projecting into one of said slots, said end of the plunger being formed with straight sides bearing against the sides of said slot for preventing circumferential turning movementof the ring member with respect to the sleeve and presenting rounded ends permitting forced removal of the ring member axially from the sleeve, an outwardly extending annular, radially disposed peripheral flange formed on said ring member centrally thereof, a two-piece separable retaining frame of ring-like configuration disposed within the recess of said journal box and including a body portion and a face plate, and means removably securing said face plate to said body,

portion, said face plate and said body portion forming therebetween an internal annular recess into which said radially extending flange extends and in which it is rotatably confined.

CARL VINCENT.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

